Improvement in lubricators



1..4 Ross.l

, i Luhricaturs.

N0.143,422. Pateniedocr. 7,1873.

UNITED STATES PATENT OFFICE,

JAMES ROSS, OF CHARLESTOWN, ASSIGNOR TO JOHN F. ROSS, OF NORTHCAMBRIDGE, MASSACHUSETTS.

IMPROVEMENT IN LUBRICATORS.

Specification forming part of Letters Patent No. 143,422, dated October7, 1873; application iiled July 28, 1873.

To all whom it may concern:

Be it known that I, J AMEs Ross, of Charlestown, in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Lubricators; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawings, whichform part of this specification.

My invention relates to improvements in oil-cups or lubricators for thepurpose of lubricating journals7 bearings, &c. The invention consists inthe employment of a spindle surrounded by a spiral wire that projectsthrough the bottom of the cup, by which arrangement the liquid used as alubricator is obliged toliow around the spindle in a spiral direction,of a pitch equal to the pitch of the spiral, before it can reach thebearing that is to be lubricated. Grit and impurities are thus preventedfrom passing with the lubricating liquid to the journal, as the spiralwire acts as a strainer, and retains the grit and other impurities. Theamount of lubricating liquid to be conveyed from the cup to the journalcan be easily regulated, simply by increasing or decreasing the pitch ofthe spiral. No stopcock is needed to regulate the iiow of thelubricating liquid.

On the drawing, Figure l represents a side elevation of my invention,and Fig. 2 represents a central longitudinal section on the line A Bshown in Fig. l.

a represents the body of the cup, in the usual manner, being perforatedwith a hole, through which the lubricating liquid iiows to the journal,bearing, or other` part that is to be lubricated; but, as a great dealof the oil is wasted when allowed to iiow unobstructed from the cup, Ihave provided a simple and eiiicient device for regulating the amoimt ofoil that issues from the cup in a given time. The same consists in theemployment of a spindle, 11 of a circular or polygonal section,surrounded by a spiral wire, c, as shown in Figs. l and 2. The spindle band spiral wire c project through the hole in the body a of the cup, asrepresented in Fig. 2. The spiral wire is wound closely around thespindle b, and the hole in the body a is made just a little larger indiameter than the outside diameter of the spiral wire c, by whicharrangement the oil in the cup is obliged to ilow spirally around thespindle b between the spaces of the spiral wire c.

From the above will be understood that the closer the spiral wire c iswound the less oil can issue from the cup, and that a greater quantityof oil will flow therefrom if the pitch of the spiral wire c isincreased. Consequently, I can regulate the delivery of the lubricatingliquid om the cup simply by closing or stretching out the spiral wire c.The spindle b is widened a little at the upper end, so as to prevent itfrom sliding down through the spiral wire c. Another advantage of thespiral wire c is, that it acts as a strainer for the liquid, thuspreventing any dust, grit, or dirt contained in the cup from beingconducted to the journal or bearing that is to be lubricated.

b This, my invention, is applicable to any of the ordinary cups nowused; and I claim no invention in the construction or generalarrangement of the cup shown in the drawing, except as relates to thespindle b and spiral wire c projecting through a suitable hole in thebody a of the cup. p

The lower end of the spiral wire, as well as the lower end of thespindle, is to be kept in contact with the shaft that is to belubricated, so that, by the revolution of the shaft, the oil will bedrawn to the bearing, and cease to iiow as soon as the shaft is keptstationary.

Having thus fully described the nature, construction, and operation ofmy invention, I wish to secure by Letters Patent, and claim- As aregulator for oil-cups and lubricators, the circular or polygonalspindle b, surrounded by a loosely-wound spiral wire, c, projectingthrough the oil-cup, and kept in contact in their` lower ends with theshaft that is to be lubricated, as and for the purpose herein set forth.A

In testimony that I claim the foregoing I have hereimto set my hand this19th day of July, 187 3.

JAMES ROSS.

Witnesses:

- ALBAN ANDREN,

En. TERREY.

